Video: Ghost tractor causes mayhem in Ontario Walmart parking lot

Yep, Roll up, roll up! It's the Walmart tractor demolition derby. A powerful, driverless tractor switched on and going round in circles caused mayhem in the parking zone outside a Walmart store. But it seems there is nobody at the wheel and whoever is responsible for this tractor tragedy appears to be conspicuous by their absence.

Would you have been brave enough to jump aboard and stop the tractor? The bizarre incident was caught on video at the Richmond Hill store in Ontario, Canada.